W. Kluge

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data

We present the achievements of the last years of the experimental and theoretical groups working on hadronic cross section measurements at the low-energy e+e− colliders in Beijing, Frascati, Ithaca, Novosibirsk, Stanford and Tsukuba and on τ decays. We sketch the prospects in these fields for the years to come. We emphasise the status and the precision of the Monte Carlo generators used to analyse the hadronic cross section measurements obtained as well with energy scans as with radiative return, to determine luminosities and τ decays. The radiative corrections fully or approximately implemented in the various codes and the contribution of the vacuum polarisation are discussed.

Measurement of sigma(e(+)e(-) -> pi(+)pi(-)gamma) and extraction of sigma(e(+)e(-) -> pi(+)pi(-)) below 1 GeV with the KLOE detector

We have measured the cross section

Determination of η → π+π−π0 Dalitz plot slopes and asymmetries with the KLOE detector

\sigma(e^+e^-\to \pi^+\pi^- \gamma)

Measurement of the pseudoscalar mixing angle and eta-prime gluonium content with KLOE detector

at an energy

Measurement of the DAΦNE luminosity with the KLOE detector using large angle Bhabha scattering

W=m_\phi=1.02

Study of the decay φ !f 0 (980)γ ! π + π γ with the KLOE detector

GeV with the KLOE detector at the electron-positron collider DA

Study of the branching ratio and charge asymmetry for the decay KS → πeν with the KLOE detector

\Phi

Dalitz plot analysis of e+e-→π0π0γ events at \sqrt{s} \simeq{M}_{\phi} with the KLOE detector

NE. From the dependence of the cross section on the invariant mass of the two-pion system, we extract

Measurement of the KL meson lifetime with the KLOE detector

\sigma(e^+e^-\to \pi^+\pi^-)

Study of the process e+e−→ωπ0 in the ϕ -meson mass region with the KLOE detector

for the mass range